Vacuum holding or lifting device



M HOLLAND VACUUM HOLDING OR LIFTING DEVICE. FILED FEB.2,192i

rar all r a i ll COLUMBIA, :KSSIGNOR TO THE DISTRICT OF COLUMBIA.

VACUUM." HOLDING OR LIFTTNG DEVICE.

Application filed February 2, 1921.

T0 (ZZZ whom it may concern:

13c it known that W'ALTER TTOLLAND, who is a citizen of the United States, residing at VVashingt'on, in the District of Ilolumbia, has invented certain new and useful Tmprovements in a Vacuum Holding or Lifting Device, of which the following is a specification.

My invention relates to improvements in vacuums, and the object is to provide a 1101- low metallic container, of any shape, having resilient member covering the opening wl'iich rovides a vacuum chamber with a self-resisting portion, so that it may be employed as an ordinary vacuum, as well as holding device, lifting magnet, power device and as many other specific applications of the principle as may be desired.

A further objectof my invention is vide a device comprising a vacuum so constructed that the same will maintain its position wherever placed. or the purpose of t rose far-ailiar with devices of this character is estimated that ordinary air exerts a ssure of 14.69 pounds to the square inch exposed surface, and the resilient porion the container, yielding under the "iressure of the outside air becomes tensed or retched, and holds the container down with a like pressure.

ii ill further object of the invention is the simplicity in the construction and the decreased cost of manufacture which, together with the importance of a device of L character makes the same valuable in any commercial enterprise. I

With the above and other objects in view, as will be hereinafter apparent, the invention consists in general of certain novel and important features, hereinafter fully described, illustrated in the accompanying drawings, and the appended claims.

In the accompanying drawings, like char acters of reference indicate like parts in the several views of which;

Figure 1 is a vertical sectional View of the improved device,

Fig. 2 is a top plan view of the same,

Fig. 3 is a modification, showing the same in section,

to pro- Flg. 4: is a detailed sectional view of the valve,

Fig. 5 is a top plan View of the disk 6 shown in Fi 3.

b I n 1 Generally speaking my device consists of Serial No. 441,963.

container 1, of any configuration, being of rigid material and capable of withstanding the atmospheric pressure. This con tainer so eonstriuted is provided at its lower extremity with an opening 2, over which is placed a resilient material This resilient material being iastened to the rigid member by any suitable fastening means which will cause the same to be air tight. This fastening means being illustrated in the drawing, by a circular band 4, which holds the resilient material in an air tight position against the extremity of the rigid member.

The ri id container is provided with a one-way valve 5, preferably at upper eX- tremity, this valve, however, being of any common construction, there being no claim made to the valve construction. It can be, it so desired, to have the valve placed in the resilient m mber which will have the same effect as it the same was placed in the upper extremity of the rigid container.

It is requisite that the resilient member be of such material or construction that the same will have sufficient resistance to sustain the normal weight of itself and the rigid member, as well as being sufficiently resilient so as to yield under the atmospheric pres sure.

As disclosed in my modified form of construction, it will be apparent that the rigid container 1, is of the same construction as specified in Figure 1, and that the resilient member 3, is provided with an auxiliary resisting dish 6. This resisting disk 6 is provided with suitable holes 8, for the reception of springs 7. The springs 7 are connected at the other end to the rigid member 1, by any suitable means. This disk through the springs '7 which are connected to the rigid member 1 is sufliciently strong so as to sustain the normal weight of the rigid member and itself as well as yielding under the atmospheric pressure.

To more clearly illustrate my invention the mode of operation is as follows:

Through the medium of a pump, not shown, the air within the container 1 is withdrawn through valve 5, thus creating a vacuum within said container. By creating a vacuum within the container 1, the resilient member 3, is forced to a certain extent into the opening 2, as disclosed in dotted lines in Fig. 1. The exerted pressure upon the resilient member 3, is transmitted by the resilient member to the rigid container 1 which gives it a lifting or holding power equivalent to the amount .of pressure exerted upon the resilient member by the atmosphere attempting to force its way into the rigid container 1.

Having thus described my invention, what I claim as new is:

1. A vacuum head, comprising a rigid hollow receptacle having an open mouth, a resilient member over and closing the open mouth of said rigid receptacle to provide an air tight chamber, the receptacle being provided with means to facilitate connection of a pump therewith to exhaust air from said receptacle, said resilient member being constructed and adapted to be flexed into the mouth of the rigid receptacle from normal condition by the atmospheric pres sure there against upon the exhaustion of: air from said chamber and means to'prevent return of air into the receptacle.

2. A vacuum head, comprising a rigid hollow receptacle having an open mouth, a resilient member over and closing the open mouth of said rigid receptacle to provide an air tight chamber, and a valve carried by the receptacle provided with means to facilitate connection with the pump therewith to exhaust air from said receptacle, said resilient member being constructed and adapted to be flexed into the mouth of the rigid receptacle from normal condition by atmospheric pressure there against upon the exhaustion of air from said chamber, said valve preventing return of air into the receptacle.

3. A vacuum head, like that described in claim 1, wherein the resilient member is provided with an auxiliary resisting disk, said disk being located in spaced relation to and parallel with the resilient member inwardly of the latter and radial elastic members having their ends respectively connected to the rigid member and themarginal portions of the auxiliary resisting disk for yieldingly supporting the latter substantially centrally of the resilient member.

4. A. vacuum head like that described in claim 1, wherein yieldable means is pro vided inwardly oi and adjacent to the resilient member for providing auxiliary resistance to the flexing ofthe resilient member.

5. A vacuum head, comprising a rigid hollow receptacle having an open mouth, a resilient member over and closing the open mouth of said rigid receptacle to provide an air tight chamber, the receptacle being provided with means to facilitate exhaustion of air therefrom, said resilient member being constructed and adapted to be flexed into the mouth of the rigid receptacle rem normal conditions by the atmospheric pressure there against upon the exhaustion of air from said chamber, and means to prevent return of air into the receptacle.

In testimony whereof I hereunto afiir; my

signature.

WALTER- HOLLAND. 

